5.4 Renaming Fields

Another use of recset is to rename existing fields. This is achieved using the
-r flag.
To rename all instances of the Expiry field occurring in any
record of type Item to UseBy,
the following command suffices:

$ recset -t Item -f Expiry -r 'UseBy' stock.rec

As with most operations, this could be done selectively, using the -e flag and a
selection expression.